cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A289754 Primes of the form k!10 - 1, where k!10 is the decuple factorial number (A288327).

Table of values

n a(n)
1 2
2 3
3 5
4 7
5 23
6 199
7 239999
8 7354367
9 719999999
10 2287853567
11 50399999999
12 43193222037503
13 199094626418687
14 17254743876205585224626400657407
15 620448401733239439359999999999999999999999999999
16 17999257015554062631539656405422901164857242675052543

List of values

[2, 3, 5, 7, 23, 199, 239999, 7354367, 719999999, 2287853567, 50399999999, 43193222037503, 199094626418687, 17254743876205585224626400657407, 620448401733239439359999999999999999999999999999, 17999257015554062631539656405422901164857242675052543]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.